Modified Bituminous Membranes – SBS (Torch On)

Modified Bitumen Roofing, commonly known as “torch on roofing”, was born out of the desire to improve bitumen’s waterproofing characteristics by adding rubber (SBS) to the bitumen.

A SBS blend is more elastic than bitumen. The blend performs better when a roof is exposed to significant increases or decreases in ambient temperature over short periods in time.

The heat of a torch or hot asphalt is used to fuse layers of SBS membranes together creating the roof system. Alternatively, adhesives or more expensive self-adhered membranes are used to adhere the layers together.

Our workers undergo ongoing training and skill development to ensure that each roof is installed to Siplast’s specifications. Siplast, upon inspection of Westcoast’s work, will warranty any workmanship defects as well as material defects.

Westcoast Roofing Systems has earned the unique ability within the industry to provide this value to its customers.

Tip: The risk of fire associated with torch-applied SBS systems is high and needs to be mitigated at the design stage to ensure that no combustible materials are exposed to the heat of the torch. We follow strict work procedures, created by the Insurance industry, to mitigate the risk of fire.

If a contractor does not know the legal responsibility necessary to mitigate the risk of fire and/or chooses not to enforce the work procedures required, the contractor’s insurance underwriter is not under obligation to pay for damages.